Abstract

Using the model of an elastic continuum, precise analytical solutions of the equations of motion are established and a theory of the spectrum and components of the displacement field of acoustic phonons is developed for a two-well resonant-tunneling nanostructure with AlN – quantum barriers and GaN∕Al_xGa_1−xN – quantum wells. For the experimentally realised nanostructure – the active zone of a quantum cascade detector – depending on its geometric parameters, the spectrum of acoustic phonons and normalized components of the displacement fields were calculated.

Graphical abstract

中文翻译：

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多层氮化物基纳米结构中声子的光谱和归一化模式

摘要

利用弹性连续体模型，建立了运动方程的精确解析解，并针对具有AlN –量子势垒的两阱共振隧穿纳米结构，开发了声子的声子位移场的频谱和成分理论。 GaN ∕ Al _x Ga _1-x N –量子阱。对于通过实验实现的纳米结构-量子级联检测器的有效区域-根据其几何参数，计算了声子的光谱和位移场的归一化分量。

图形概要